/*左边菜单栏样式*/
.div_class_ul {
    width: 20%;
    text-align: center;
    min-width: 150px;
    max-width: 300px;
    height: 870px;
    overflow-y: hidden;
    display: block;
    padding-top: 40px;
    background: #282C34;
    margin: 0;
    font-size: 20px;
    float: left;
}

.div_class_ul li {
    list-style: none;
    margin: 0 auto;
    width: 240px;
    height: 40px;
    margin-top: 25px;
    /* padding-top:5px; */
    display: block;
    margin-bottom: 25px;
}
a {
    text-decoration: none;
    display: block;
    height: 100%;
    line-height: 40px;
    padding-left: 20px;
    border: 1px solid #ccc;
    font-size: 18px;
    color: #71ADB5;
}
li:hover{
    background: rgba(82,97,106,0.6);;
}
span{
    color: #fff;
    font-weight: bold;
}
